mysql8.0 定时创建分区表记录 每天定时创建下一天的分区表

因单表数据太大， 需要表按时间分区 分区字段 pay_out_date 按天分 要求自动创建

1. 创建分区表

MYSQL的分区字段，必须包含在主键字段内

常见错误提示

错误提示：#1503
A PRIMARY KEY MUST INCLUDE ALL COLUMNS IN THE TABLE'S PARTITIONING FUNCTION
MySQL主键的限制，每一个分区表中的公式中的列，必须在主键/unique key 中包括

CREATE TABLE `game_bet` (
   `id` BIGINT(20) NOT NULL AUTO_INCREMENT,
   `create_date` DATETIME(6) DEFAULT NULL,
   `create_person` VARCHAR(50) DEFAULT NULL,
   `update_date` DATETIME(6) DEFAULT NULL,
   `update_person` VARCHAR(50) DEFAULT NULL,
   `bet_code` VARCHAR(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
   `agent_code` VARCHAR(50) NOT NULL,
   `game_id` INT(11) NOT NULL,
   `game_name` VARCHAR(50) DEFAULT NULL,
   `room_code` VARCHAR(11) NOT NULL,
   `desk_code` VARCHAR(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
   `user_id` BIGINT(20) NOT NULL,
   `user_name` VARCHAR(50) NOT NULL,
   `round_code` VARCHAR(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL,
   `commission` DECIMAL(18,3) NOT NULL,
   `bet_amount` DECIMAL(18,3) NOT NULL,
   `valid_bet_amount` DECIMAL(18,3) NOT NULL,
   `pay_out` DECIMAL(18,3) NOT NULL,
   `win_amount` DECIMAL(18,3) NOT NULL,
   `settle_flag` INT(11) NOT NULL,
   `device` INT(11) NOT NULL,
   `login_ip` VARCHAR(50) NOT NULL,
   `currency` VARCHAR(50) NOT NULL,
   `bet_date` DATETIME(6) DEFAULT NULL,
   `pay_out_date` DATETIME(6) NOT NULL DEFAULT '1970-01-01 00:00:00.000000',
   `result` VARCHAR(50) NOT NULL,
   PRIMARY KEY (`id`,`pay_out_date`),
   KEY `IX_game_bet_agent_code` (`agent_code`),
   KEY `IX_game_bet_create_date` (`create_date`),
   KEY `IX_game_bet_device` (`device`),
   KEY `IX_game_bet_game_id` (`game_id`),
   KEY `IX_game_bet_pay_out_date` (`pay_out_date`),
   KEY `IX_game_bet_round` (`round_code`)
) ENGINE=INNODB DEFAULT CHARSET=utf8
 PARTITION BY RANGE (to_days(`pay_out_date`))
(PARTITION p20190421 VALUES LESS THAN (737535) ENGINE = InnoDB) 

2. 创建每日新增表分区的存储过程

DELIMITER $$

USE `poker_games`$$

DROP PROCEDURE IF EXISTS `time_partition_procedure`$$

CREATE DEFINER=`root`@`%` PROCEDURE `time_partition_procedure`()
BEGIN

SELECT REPLACE(b.partition_name,'p','') INTO @in_date FROM information_schema.PARTITIONS b WHERE b.table_name ='game_bet' ORDER BY b.partition_ordinal_position DESC LIMIT 1;

SET @max_date= DATE_ADD(@in_date,INTERVAL 1 DAY)+0 ;

SET @date= DATE_ADD(@in_date,INTERVAL 1 DAY)+0 ;

SET @sql=CONCAT('ALTER TABLE game_bet add PARTITION (PARTITION p',@date,' VALUES LESS THAN (TO_DAYS(''',@max_date,''')));');

SELECT @sql;
SELECT @max_date;

PREPARE strsql FROM @sql;    #预执行sql

EXECUTE strsql;           #执行sql 

DEALLOCATE PREPARE strsql;   #释放sql

COMMIT;

END$$

DELIMITER ;

3. 创建每天执行存储的事件 明天凌晨3点执行

DELIMITER $$

CREATE EVENT `poker_games`.`time_partition_event`
ON SCHEDULE EVERY 1 DAY STARTS DATE_ADD(CURRENT_DATE+1,INTERVAL 3 HOUR)
ON COMPLETION PRESERVE
ENABLE DO
BEGIN
    CALL time_partition_procedure();
END;